88 results about "Hydrogen safety" patented technology

The invention relates to the technical field of automobile energy supply, in particular to a solid hydrogen storage-fuel cell integrated power assembly system based on dual-mode hydrogen supply, which comprises a hydrogen supply path identification module, a hydrogen storage unit state monitoring module, a linkage path switching module, a fuel cell load matching module and a safe hydrogen discharge regulation and control module. According to the method, the hydrogen supply pressure difference value is obtained by dynamically comparing the pressure of the cavity of the hydrogen storage tank with the pressure of the hydrogen inlet of the fuel cell, the current hydrogen supply path state can be accurately recognized in the early stage, rapid judgment of the hydrogen supply mode and accurate control of path switching are achieved, whether the risk of hydrogen supply interruption exists or not can be effectively screened, and the reliability of hydrogen supply is improved. The switching reliability of a hydrogen supply channel is improved through cross comparison of key state signals of a main channel and a standby channel, and instant response and energy consumption optimization of hydrogen discharge safety regulation and control are guaranteed through a linkage feedback mechanism between the hydrogen concentration change rate in unit time and catalytic converter control power.

The invention discloses an electricity-hydrogen-ammonia coupling system configuration method and system, and relates to the technical field of electricity-hydrogen-ammonia coupling systems, and the method comprises the steps: sequentially carrying out two-stage clustering according to renewable energy source daily output data, electrothermal hydrogen daily load data and daily net energy, and generating a typical daily scene and a clustering index; performing electric hydrogen ammonia energy storage collaborative simulation operation on all the typical day scenes, and reconstructing a year-round energy storage state based on a clustering index according to the variation of the hydrogen storage amount and the ammonia storage amount after simulation operation of each typical day scene; and taking the minimum annual total cost formed by the simulation operation cost, the capacity configuration cost and the hydrogen safety risk cost as an optimization target to obtain an optimal equipment capacity configuration scheme. While the calculation cost is reduced and the solving efficiency is improved, the time sequence connection characteristic and the energy storage characteristic of different long-time energy storage are kept, and multi-time-scale energy transfer is realized, so that the applicability and the economical efficiency of a planning scheme are improved.

The invention relates to an active and passive integrated protection method and system for hydrogen safety in a confined space, and the protection method specifically comprises the steps: building an equal ratio test model and a simulation model of a hydrogen utilization system in the confined space, and carrying out the numerical simulation analysis; carrying out limited space hazard source identification, determining installation positions of a limited space hydrogen leakage collection device and a hydrogen concentration sensor, and formulating a hydrogen micro-leakage criterion combining a hydrogen concentration change rate, a hydrogen concentration break variable and a hydrogen concentration threshold value; and determining an arrangement scheme of a limited space exhaust system and an explosion pressure relief system. The protection system comprises an active protection device and a passive protection device. Compared with the prior art, the method has the advantages that the accuracy of the simulation model is verified, the simulation model is continuously optimized and adjusted until the accuracy meets the requirement, and the obtained result is more reliable and is more consistent with the actual situation. The hydrogen safety active and passive integrated protection device provided by the invention has early warning and protection functions, and comprehensively and efficiently realizes prevention and control of system hydrogen safety.

The invention discloses a hydrogenation safety control method and system based on adaptive robust filtering, and relates to the technical field of hydrogen energy, and the method comprises the steps: building a state prediction equation of a plurality of sensors in a hydrogenation process of a hydrogen refueling station based on Kalman filtering; constructing a filtering residual error based on the state prediction equation, and constructing a robust factor based on the filtering residual error; adjusting the initial observation noise covariance matrix of each sensor based on the robust factor to obtain an observation noise covariance matrix after robust adjustment; based on the health degree of each sensor, calculating a weight value corresponding to each sensor; dynamically adjusting the observation noise covariance matrix after the adversarial adjustment based on the weight value to obtain an observation noise covariance matrix after the weight adjustment; and based on the observation noise covariance matrix after weight adjustment and the state prediction equation, performing filtering updating on the state parameters of the plurality of sensors. The technical problem that in the prior art, the control precision and safety of a hydrogen refueling station are insufficient is solved.

The invention discloses a vehicle hydrogen fuel cell hydrogen-related safety management and control system and a control method thereof, and relates to the technical field of vehicle engineering. The hydrogen-related safety management and control system comprises a main box body, and a purging system and a hydrogen-related part are arranged in the main box body; a top exhaust port is formed in a top plate of the main box body, and side exhaust ports are formed in side plates of the main box body and used for air exchange between the main box body and the outside. In the purging system, a first purging part is arranged at a preset purging site below the hydrogen related part and can drive gas to flow upwards through purging, and a second purging part is arranged at the top in the main box and can drive gas to flow towards the side exhaust port through purging. The hydrogen-related safety management and control system can directly utilize running wind formed in the running process of the vehicle, passive ventilation is conducted at the top exhaust port and / or the side exhaust port, the purging part can guide hydrogen leaked by the hydrogen-related part to the top exhaust port and / or the side exhaust port in time, the risk that the hydrogen gathers in the box body is reduced, and the safety of the vehicle is improved. And the use safety of the hydrogen fuel cell system is improved.

The invention provides a high-capacity electric hydrogen production system and a control method thereof, and relates to the technical field of water electrolysis hydrogen production safe operation. On one hand, a high-capacity electric hydrogen production system is provided, a pipe pressure balancing device is additionally arranged, and the current variable quantity of a PEM electrolytic bath, the actual gas pipe pressure intensity of an oxygen discharging pipe and a hydrogen discharging pipe and the actual liquid level of a gas-liquid separation device are monitored in real time; the real-time current of the PEM electrolytic cell is adjusted through the control center to adjust the pressure of the gas pipe of the pipeline, and the pressure of the gas pipe of the oxygen discharging pipe and the pressure of the gas pipe of the hydrogen discharging pipe meet the safe pressure relation through auxiliary adjustment of the pipe pressure adjusting valve; on the other hand, the invention provides a control method of the high-capacity electric hydrogen production system, and safe operation of the electric hydrogen production system is realized through self-checking control, current control, liquid level control and emergency control. According to the invention, the safety of the system is improved, and the purity and efficiency of the gas are ensured, so that the high-capacity PEM electrolytic bath is more reliable and efficient in practical application.

The present invention relates to a vehicle control method, system and vehicle, including: obtaining the residual hydrogen pressure of gaseous residual hydrogen in the liquid hydrogen system when the vehicle is parked; when the residual hydrogen pressure is within a first preset pressure range, if there is a vehicle power supply demand, the fuel cell system starts a conversion mode to use the gaseous residual hydrogen to power the vehicle; when the residual hydrogen pressure is greater than the upper limit of the first preset pressure range, the fuel cell system starts a consumption mode to consume the gaseous residual hydrogen according to a preset consumption method. The present application utilizes and consumes gaseous residual hydrogen through the conversion mode and consumption mode of the fuel cell system, improves the utilization rate of gaseous residual hydrogen, and avoids the hydrogen safety problem of excessive hydrogen generated during parking.

The utility model relates to the technical field of wet-type dust removal hydrogen discharge, in particular to an electric hydrogen discharge valve for a wet-type dust removal system, which comprises a valve main body, a plurality of exhaust ports are formed in the top of the valve main body, the bottom of the valve main body is open, and the open end of the bottom of the valve main body is communicated with the top of a wet-type dust removal system pipeline; the upper cover plate is arranged at the top of the valve body, the bottom of the upper cover plate is fixedly connected with a moving shaft, the moving shaft is made of magnetic materials, the moving shaft vertically penetrates through the top of the valve body in a sliding mode, and the upper cover plate is used for abutting against the top of the valve body and sealing the exhaust port; the coil is arranged in the valve body and is coaxial with the moving shaft, the coil is used for providing vertically downward electromagnetic force for the moving shaft, the coil is electrically connected to an external power source, and the external power source is in control connection with the wet dust removal system; the elastic piece is arranged on the valve body and used for providing vertically-upward restoring force for the upper cover plate. The device has the effects of convenience in installation, economy, effectiveness, active hydrogen discharge, safety and explosion prevention.

The invention relates to the technical field of new energy hydrogen production and chemical coupling application, and discloses a natural gas hydrogen-doped pipeline conveying system which comprises an energy supply layer, a chemical production layer, a digital integrated platform and a dispatching control module. The energy supply layer integrates photovoltaic power, wind power, nuclear power and a power grid standby power supply through a direct-current micro-grid, is matched with a sodium ion flow battery energy storage system, and supplies energy to the water electrolysis hydrogen production system of the non-noble metal catalyst and porous electrode structure. In the chemical production layer, pipeline steel or double-layer alloy steel is selected as a hydrogen-doped pipeline according to the proportion, a hydrogen concentration monitoring and sound wave leakage detection system is arranged, the hydrogen-doped safety upper limit of high pressure of 10% and low pressure of 30% is set, and a chemical hydrogen using system is connected through a gas distribution valve set and adjusted by an intelligent module. The digital platform is based on monitoring of the Internet of Things, hydrogen doping is optimized by means of a fuzzy PID algorithm and digital twinning, and risks are early warned. The scheduling module combines wind and light prediction and real-time electricity price, optimizes the start and stop of the electrolytic cell, the hydrogen doping ratio and the conveying pressure, and achieves efficient and stable conveying.

The application belongs to the technical field of hydrogen safety monitoring, and specifically relates to a hydrogen leakage detection and positioning system.The system comprises a hydrogen leakage far-field detection unit array, a data platform and a hydrogen leakage on-site attached detection unit.The far-field detection unit array is composed of multiple wireless hydrogen sensors and a leakage hydrogen collection device, is used for remotely and timely detecting the hydrogen concentration of a hydrogen system to be detected, and sends the detected hydrogen concentration and the corresponding detection unit number to the data platform;the data platform determines the hydrogen leakage position accordingly;the hydrogen leakage on-site attached detection unit is arranged in the detection range of each far-field detection unit, is attached to a key position with a relatively high leakage probability in the hydrogen system to be detected, and realizes visual detection of hydrogen leakage;the system can improve the safety, accuracy and cost-effectiveness of hydrogen leakage monitoring, and is suitable for various application scenarios such as hydrogen refueling stations and hydrogen energy production and storage sites.

The present invention provides an apparatus for evaluating a safety valve for liquid hydrogen, the apparatus including: a hydrogen liquefaction unit configured to liquefy hydrogen gas and store the liquid hydrogen in a liquid hydrogen storage chamber; and a hydrogen vaporization unit configured to vaporize the liquid hydrogen stored in the liquid hydrogen storage chamber. By delivering high-pressure cryogenic vaporized hydrogen, which is generated by accumulation of vaporized hydrogen filling an internal space of the liquid hydrogen storage chamber, to a liquid hydrogen safety valve for a test, performance of the safety valve for liquid hydrogen can be evaluated under actual operating environmental conditions. Accordingly, reliability of performance evaluation data for the safety valve for liquid hydrogen can be ensured.

The present application relates to an intelligent chassis-borne hydrogen power generation system, which includes an intelligent chassis-borne transport module for carrying and transporting high-pressure gas cylinders; an intelligent navigation module for controlling the intelligent chassis-borne transport module to travel along a preset route; an access network connection module for connecting the pipeline of the high-pressure gas cylinder to the gas inlet of the fuel cell stack; a hydrogen safety monitoring module for real-time monitoring of the hydrogen concentration value in the environment. When the hydrogen concentration value monitored by the hydrogen safety monitoring module reaches the trigger condition, the hydrogen safety monitoring module sends a trigger signal to control the start-up of the intelligent navigation module; a hydrogen maintenance room for being set at a position maintaining a safe distance from the fuel cell stack. The hydrogen maintenance room can be used as the preset route end point of the intelligent navigation module. The present application has the effect of ensuring the safety of the accident site. The entire transportation process of the high-pressure gas cylinder is completed fully automatically, realizing unmanned and intelligent management, and ensuring the life safety of the safety officer.

The invention discloses an energy-saving intelligent purging method in a galvanic pile shell, relates to the technical field of fuel cells, and introduces an intelligent purging strategy to ensure dew point control and hydrogen safety in the galvanic pile shell at the same time, so that waste of compressed air is avoided, and energy is saved. It is guaranteed that condensation is not generated in the galvanic pile shell (the purging amount is intelligently calculated), the combustible gas explosion risk is avoided (the purging amount is intelligently calculated), and meanwhile cold start of the galvanic pile can be facilitated (galvanic pile cooling caused by excessive purging is avoided).

This invention provides a BCC solid-state hydrogen storage safety control system, comprising: a hydrogen storage device having a hydrogen storage tube with a built-in BCC hydrogen storage alloy, a hydrogen charging valve for controlling the opening and closing of the hydrogen storage tube, and a coolant channel; a cooling system forming a closed-loop circulation loop with the coolant channel for supplying coolant to the hydrogen storage device; and a safety interlock control module for collecting safety-related parameters of the hydrogen storage device, cooling system, and environment. When the parameters meet the first-level, second-level, and third-level interlock conditions, the module correspondingly activates the first-level interlock to open the hydrogen charging valve, the second-level interlock to adjust the hydrogen flow rate and the operating parameters of the cooling system, and the third-level interlock to close the hydrogen charging valve. The BCC solid-state hydrogen storage safety control system of this invention features high integration, good safety, and high intelligence. Through an optimized heat exchange structure, rigorous multi-level interlock logic, and a comprehensive fault diagnosis model, the system achieves efficient thermal management, full-process safety protection, and intelligent fault handling during the hydrogen charging process.

This application discloses a multi-scenario test system for hydrogen safety in tunnels, comprising: a simulated tunnel component, which includes a tunnel pipe and an axial flow fan disposed at one end of the tunnel pipe. The axial flow fan faces the tunnel pipe and is used to purge the tunnel pipe and provide different ventilation velocities within the tunnel pipe. Sensor holes are provided on the side wall of the tunnel pipe for connecting external sensors as needed. An installation base is provided at the bottom of the tunnel pipe. A mounting bracket is provided, which includes a base plate and a top plate, which are supported by a support plate. The base plate is mounted on the installation base. A hydrogen storage component is provided, which includes a hydrogen storage tank, a mounting plate, and a mounting clamp. The mounting clamp fixes the hydrogen storage tank to the mounting plate. The axial direction of the hydrogen storage tank is parallel to the mounting plate. The mounting plate is mounted on the top plate, and the angle between the mounting plate and the top plate is 0°–90°.

This invention discloses a method, system, electronic device, and storage medium for measuring hydrogen leakage rate, relating to the field of hydrogen safety utilization technology. The method includes: calculating the acoustic signal and signal phase difference corresponding to the target device based on an ultrasonic sensor array; obtaining a predicted nozzle aperture based on the acoustic signal, signal phase difference, and a first conversion model determined by a deep learning algorithm; obtaining a predicted gas pressure based on the acoustic signal, signal phase difference, and a second conversion model determined by a deep learning algorithm; and calculating the hydrogen leakage rate at the leak point of the target device based on the predicted nozzle aperture and gas pressure. This invention can accurately predict the hydrogen leakage rate, thus laying the foundation for predicting the amount of hydrogen leakage and the timing of early warnings.

A hydrogen explosion suppression system and method based on multi-dimensional perception and hierarchical linkage belong to the technical field of hydrogen safety protection. The system comprises a control unit, a hydrogen concentration sensor, a spark sensor, a flame sensor, a pressure sensor, a control unit and an explosion suppression action mechanism. The control unit receives alarm signals from each sensor and controls the corresponding explosion suppression action mechanism according to the preset hierarchical linkage rules, realizing hierarchical identification and linkage explosion suppression based on multi-dimensional signals such as hydrogen concentration, spark, flame and pressure, and solving the technical problems of single hazard identification dimension, fixed explosion suppression response mode and difficult to balance response speed and explosion suppression effect in related technologies.

According to the hydrogenation control method and device of the vehicle, if a whole vehicle safety state signal indicates that the state of the vehicle meets the hydrogenation condition and a system state signal indicates that the state of a vehicle-mounted hydrogen storage system meets the hydrogenation condition, it is indicated that safe hydrogenation can be conducted at present, and therefore hydrogen is injected into the vehicle-mounted hydrogen storage system. In the hydrogen filling process, the state of the vehicle and the state of the vehicle-mounted hydrogen storage system continue to be detected, and if the detected state does not meet the hydrogen filling condition, it is indicated that other abnormal conditions occur in the hydrogen filling process, so that safety risks possibly exist in continuous filling in the state at the moment, and hydrogen filling is stopped. It can be seen that the state is detected before filling is started, hydrogen filling is started only when both the state and the state meet the hydrogenation condition, the state is continuously detected in the filling process, and hydrogen filling is stopped once the hydrogenation condition is not met. On the basis, the hydrogenation safety in the whole hydrogenation process is improved.

The invention relates to a hydrogen-rock microfluidic in-situ test system and method for simulating underground hydrogen storage. The system comprises an environment control module, a reaction type microfluidic chip, a fluid injection module, a back pressure control module, an in-situ test module and a gas chromatographic analysis module, the environment control module provides a high-temperature and high-pressure environment; the reaction type micro-fluidic chip is arranged in the environment control module and provides a hydrogen-rock reaction place; the inlet end of the reaction type micro-fluidic chip is connected with the fluid injection module, and the outlet end of the reaction type micro-fluidic chip is sequentially connected with the back pressure control module and the gas chromatographic analysis module; the back pressure control module is used for maintaining a preset pressure environment; the in-situ test module is used for capturing fluid distribution and mineral form change in the chip; and the gas chromatographic analysis module is used for analyzing the composition and concentration change of a reaction outlet gas-phase product. According to the device and the method, the micromorphological evolution and the macroscopic reaction rate of the hydrogen-rock reaction in the underground reservoir environment are synchronously monitored, and an accurate experimental means is provided for geological hydrogen storage safety evaluation.

The utility model discloses a hydrogen leakage disposal system for an airplane, which belongs to the technical field of airplane hydrogen safety and comprises a hydrogen leakage detection unit, a signal processing unit, a control unit, a passive ventilation unit and an inert gas control unit. The hydrogen leakage detection unit and the passive ventilation unit are arranged on a cabin wall plate right above a hydrogen leakage danger area; the inert gas control unit is arranged right below the hydrogen leakage danger area; the hydrogen leakage detection unit is connected with the signal processing unit, the signal processing unit is connected with the control unit, and the control unit is connected with the inert gas control unit and the passive ventilation unit; according to the system, the mode that the cabin space is filled with inert gas replaces the mode that a traditional fire extinguisher extinguishes fire points, the system is suitable for the situation that the hydrogen leakage position in a large space is unknown, the detection, alarm and disposal functions can be achieved in the flight process and the ground operation process of an aircraft, and the safety of hydrogen use of the aircraft can be remarkably improved.

The utility model discloses a discharging device for ensuring hydrogen safety of a sodium hypochlorite generator, and relates to the technical field of hydrogen discharging. The device mainly comprises a gas mixing pipe, the gas mixing pipe is communicated with a hydrogen inlet pipe, an air inlet pipe, an exhaust pipe and a return pipe, the other end of the return pipe is communicated with the air inlet pipe, a hydrogen concentration sensor is arranged in the gas mixing pipe, the other end of the return pipe is communicated with the air inlet pipe, and a first electromagnetic valve is arranged on the hydrogen inlet pipe. And a second electromagnetic valve is arranged on the exhaust pipe, a third electromagnetic valve is arranged on the return pipe, and safe emission of hydrogen can be achieved through cooperative work of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve. Through the arrangement of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, the mixing proportion of hydrogen and air can be accurately controlled, it is ensured that the hydrogen concentration is always lower than the explosion limit, and therefore the safety risk in the use process of the generator is remarkably reduced.

The utility model relates to the field of protection devices, in particular to a solid hydrogen storage safety protection device. Comprising a solid hydrogen storage device, a controller and a protection assembly, the solid hydrogen storage device comprises a shell and a hydrogen storage tank, the hydrogen storage tank is installed in the shell, the protection assembly comprises a protection box and a bottom plate, the controller is installed on one side of the outer wall of the protection box, the bottom plate is attached to the inner wall of the protection box, and the shell is placed on the upper surface of the bottom plate; two mounting plates are fixedly connected to the lower surface of the bottom plate, and fixing plates are fixedly connected to the two sides of the outer wall of the protection box. The solid-state hydrogen storage safety protection device has the advantages that in the daily use process of the solid-state hydrogen storage device, the protection box can isolate external air from the solid-state hydrogen storage device, so that danger caused by hydrogen leakage is prevented, air leaked from the interior of the protection box can be automatically poured into the tank body to be stored, and the safety of the solid-state hydrogen storage device is improved. And the use safety of the solid hydrogen storage device is improved.

The invention discloses a fuel cell stack shell purging method, electronic equipment and a storage medium, a fuel cell stack comprises a stack core and a shell, the stack core is arranged in the shell, the stack core comprises a hydrogen cavity, and the fuel cell stack is connected with a purging device of the fuel cell stack shell. The method comprises the following steps: determining the volume of a cavity between the reactor core and the shell and the hydrogen leakage rate of the hydrogen cavity; determining purging interval time according to the volume of the cavity and the hydrogen leakage rate; and the shell is purged according to the purging interval time. According to the scheme, the shell is intermittently purged while the safety of hydrogen in the fuel cell stack shell is guaranteed, so that the energy consumption of a fuel cell system is reduced, and the energy efficiency of the fuel cell system is improved.

The invention discloses a high-pressure hydrogen-doped natural gas pipeline leakage ignition experiment device and an experiment method, and belongs to the technical field of high-pressure hydrogen safety experiments. The high-pressure hydrogen-doped natural gas pipeline leakage ignition experiment device comprises a hydrogen pressurization system which is connected with a high-pressure gas storage tank through a confluence pipeline; a vacuumizing assembly, an emptying ball valve and an electric control valve are arranged on a confluence pipeline between the hydrogen pressurizing system and the high-pressure gas storage tank, and the electric control valve is in communication connection with an external computer; a rupture disk clamping structure is arranged at one end of the high-pressure gas storage tank, and a rupture disk is arranged on the rupture disk clamping structure; one end of the high-pressure gas storage tank provided with the rupture disk is provided with an ignition system, a camera shooting assembly and an out-of-tube thermocouple array, a lifting structure is arranged at the bottom of the ignition system, and a plurality of sliding grooves are formed in the bottom of the lifting structure. According to the device, ignition parameters can be accurately controlled, dynamic pressure adjustment of the high-pressure storage tank is achieved, and the defects of an existing experimental device in the aspects of ignition control, pressure simulation and scene adaptability are overcome in combination with multi-dimensional ignition positioning.

The invention discloses a hydrogen supply system control method and system of a hydrogen fuel cell vehicle, the vehicle and equipment. The hydrogen supply system control method of the hydrogen fuel cell vehicle comprises the following steps: receiving a hydrogen replacement request of a hydrogen supply system gas storage cylinder; if the electric quantity of the vehicle power battery meets the replacement condition, judging whether an obstacle influencing filling work exists in the hydrogenation equipment calibration area or not according to the environment image; if not, controlling the vehicle to park in the area, and detecting whether the hydrogen supply system reaches a safety index or not; if yes, the vehicle is controlled to enter a hydrogen system standby state, and whether the whole vehicle state meets the hydrogen adding condition or not is detected; if yes, hydrogen filling operation is carried out, and in the filling process, whether the hydrogenation state is abnormal or not is judged; and if not, continuing the hydrogenation operation until the hydrogenation completion condition is met, otherwise, interrupting the filling process and giving an alarm prompt. By adopting the application, automatic monitoring and safety judgment can be performed on the whole hydrogenation process, so that the hydrogenation safety is ensured, and the control efficiency of the hydrogen supply system is improved.

The application discloses a vehicle-mounted mobile methanol autothermal reforming hydrogen production system and a hydrogen production method. The system comprises a methanol storage tank and a desalted water storage tank, both of which are communicated with a mixed liquid tank, and the mixed liquid tank is sequentially communicated with a gasifier, a premixer, a hydrogen production reactor, a condensation heat exchange unit and a hydrogen purification unit. An air preheating unit is communicated with the premixer and delivers hot air to the premixer. Methanol and desalted water are mixed in the mixed liquid tank, methanol water solution is heated to form a methanol water vapor mixture in the gasifier, hot air is mixed with the methanol water vapor in the premixer, and a methanol autothermal reforming reaction occurs in the hydrogen production reactor. The reaction product is input into the condensation heat exchange unit and the hydrogen purification unit for treatment. The application has the advantages of compact structure, simple operation, good stability and the integration of hydrogen production, storage and utilization, and solves the problems of large hydrogen production system area, high hydrogen transportation safety risk and high hydrogen use cost in the prior art.

The invention belongs to the technical field of blast furnace ironmaking, and discloses a blowing-out process and a safety control method of a hydrogen-rich carbon circulating oxygen blast furnace. According to the method, safe and controllable furnace shutdown is achieved through systematic processes of preparation before furnace shutdown, precise load design, dynamic medium regulation and control, furnace top temperature and water fetching control, hydrogen safety monitoring and multi-dimensional end point judgment. The furnace condition is adjusted and the furnace is thermally washed before blowing out, the comprehensive ore-coke ratio load of 3.0-3.4 is designed based on the basic furnace temperature, the furnace top temperature is strictly controlled to be smaller than or equal to 350 DEG C in the process, the nitrogen flow is cut in advance, the nitrogen flow is increased in a stepped mode, the gas cutting operation is triggered with the hydrogen content being 12% as the threshold value, and the blowing-out end point is determined by combining a radar stock rod, wind pressure monitoring and manual tuyere exploration. According to the method, the hydrogen explosion risk is effectively prevented and controlled, the thermal state is accurately controlled, and the method is suitable for HyCROF and similar low-carbon blast furnaces through industrial verification and has extremely high safety, reliability and popularization value.

The utility model relates to an anti-collision damping device between hydrogen conveying pipelines, which comprises an arc-shaped plate, a sliding seat is connected to the front side of the arc-shaped plate in a sliding manner, extension components are connected between the left part and the right part of the sliding seat and the arc-shaped plate, a buffer component is mounted on the sliding seat, and locking pieces are mounted on the upper part and the lower part of the arc-shaped plate. Springs are connected between the locking pieces and the arc-shaped plates, damping pieces are connected to the upper portions and the lower portions of the sliding seats, heat dissipation assemblies are installed on the rear portions of the arc-shaped plates, and air blowing assemblies are installed on the upper sides of the arc-shaped plates. The buffer assembly is arranged, when the hydrogen conveying pipeline is impacted by external force, the piston piece moves backwards to exhaust air in the cylinder body, so that the impact of the external force on the hydrogen conveying pipeline is relieved, meanwhile, the damping piece makes contact with the arc-shaped plate and is compressed under stress, and secondary vibration reduction treatment is conducted on the hydrogen conveying pipeline; the heat dissipation assembly conducts heat on the surface of the hydrogen conveying pipeline and dissipates heat, the air blowing assembly conducts cold blowing treatment on the heat dissipation assembly, then the temperature of the surface of the hydrogen conveying pipeline is reduced, and therefore hydrogen conveying safety is guaranteed.